Memcached 安装及启动脚本（值的参考）

偏执的太偏执、 2022-05-24 08:47 105阅读 0赞

**解析：Memcached是什么?**

Memcached是由Danga Interactive开发的，高性能的，分布式的内存对象缓存系统，用于在动态应用中减少数据库负载，提升访问速度。

**一、软件版本**  
    libevent 稳定版  
wget http://monkey.org/~provos/libevent-1.4.14b-stable.tar.gz

memcached 稳定版  
wget  http://memcached.googlecode.com/files/memcached-1.4.5.tar.gz

**二、软件安装**  
    Libevent安装  
\[root@jw-test01 software\]\# tar zxvf libevent-1.4.14b-stable.tar.gz  
\[root@jw-test01 software\]\# cd libevent-1.4.14b-stable  
\[root@jw-test01 libevent\]\# ./configure --prefix=/usr/local/libevent/  
\[root@jw-test01 libevent\]\# make  
\[root@jw-test01 libevent\]\# make install

Memcached安装  
\[root@jw-test01 software\]\# tar -zxvf memcached-1.4.5.tar.gz  
\[root@jw-test01 software\]\# cd memcached-1.4.5  
\[root@jw-test01 memcached\]\# ./configure --prefix=/usr/local/memcached --with-libevent=/usr/local/libevent/  
\[root@jw-test01 memcached\]\# make  
\[root@jw-test01 memcached\]\# make install

**三、编写Memcached启动脚本**  
\#!/bin/bash  
\# author:kuangl  
\# date:2013-05-30  
\# description: Starts and stops the Memcached services.  
\# pidfile: /tmp/memcached1.pid  
\# config:  /usr/local/memcached  
\# chkconfig: - 55 45  
\# source function library  
. /etc/rc.d/init.d/functions  
memcached="/usr/local/memcached/bin/memcached"  
\[ -e $memcached \] || exit 1  
start()  
\{  
echo "Starting memcached:"  
daemon $memcached -d -m 1000 -u root -l 127.0.0.1 -p 11211 -c 1500 -P /tmp/memcached1.pid  
\}  
stop()  
\{  
echo "Shutting down memcached"  
killproc memcached  
\}  
case "$1" in  
start)  
start  
;;  
stop)  
stop  
;;  
restart)  
stop  
sleep 3  
start  
;;  
\*)  
echo $"Usage: $0 \{start|stop|restart\}"  
exit 1  
esac  
exit $?

**四、将脚本复制到init.d目录下**  
\[root@jw-test01 scripts\]\# cp memcached.sh /etc/init.d/memcached

**五、将memcached加入系统启项**  
\[root@jw-test01 scripts\]\# chkconfig  --add memcached  
\[root@jw-test01 scripts\]\# chkconfig --level 35 memcached on

**六、启动memcached**  
\[root@jw-test01 scripts\]\# service memcached restart  
Shutting down memcached      \[确定\]  
Starting memcached:          \[确定\]  
\[root@jw-test01 scripts\]\# ps -ef |grep memcached  
root    27616    1  0 22:18 ?        00:00:00 /usr/local/memcached/bin/memcached -d -m 1000 -u root -l 127.0.0.1 -p 11211 -c 1500 -P /tmp/memcached1.pid

**七、Memcached常用参数**

<table style="width:690px;"> 
 <tbody> 
 <tr> 
 <td>参数</td> 
 <td>说明</td> 
 </tr> 
 <tr> 
 <td>-p &lt;num&gt;</td> 
 <td>设置端口号(默认不设置为: 11211)</td> 
 </tr> 
 <tr> 
 <td>-U &lt;num&gt;</td> 
 <td>UDP监听端口(默认: 11211, 0 时关闭)</td> 
 </tr> 
 <tr> 
 <td>-l &lt;ip_addr&gt;</td> 
 <td>绑定地址(默认:所有都允许,无论内外网或者本机更换IP，有安全隐患，若设置为127.0.0.1就只能本机访问)</td> 
 </tr> 
 <tr> 
 <td>-d</td> 
 <td>独立进程运行</td> 
 </tr> 
 <tr> 
 <td>-u &lt;username&gt;</td> 
 <td>绑定使用指定用于运行进程&lt;username&gt;</td> 
 </tr> 
 <tr> 
 <td>-m &lt;num&gt;</td> 
 <td>允许最大内存用量，单位M (默认: 64 MB)</td> 
 </tr> 
 <tr> 
 <td>-P &lt;file&gt;</td> 
 <td>将PID写入文件&lt;file&gt;，这样可以使得后边进行快速进程终止, 需要与-d 一起使用</td> 
 </tr> 
 </tbody> 
</table>

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[Ubuntu]: https://www.linuxidc.com/topicnews.aspx?tid=2
[http_www.linuxidc.com_Linux_2013-06_85832.htm]: https://www.linuxidc.com/Linux/2013-06/85832.htm
[http_www.linuxidc.com_Linux_2013-05_84917.htm]: https://www.linuxidc.com/Linux/2013-05/84917.htm
[http_www.linuxidc.com_Linux_2012-09_71264.htm]: https://www.linuxidc.com/Linux/2012-09/71264.htm